An isotonic state exists within a patient's body fluids when the solute concentration of:

Intracellular fluid is greater than extracellular fluid

Extracellular fluid is less than intracellular fluid

Intracellular and extracellular fluid is equal

Interstitial fluid is less than the transcellular fluid

Answer and Explanation

The Correct Answer is C

Choice A reason: This is incorrect because intracellular fluid is greater than extracellular fluid in a hypertonic state, not an isotonic state. A hypertonic state is when the solute concentration of the extracellular fluid is higher than the intracellular fluid, which causes water to move out of the cells and shrink them.

Choice B reason: This is incorrect because extracellular fluid is less than intracellular fluid in a hypotonic state, not an isotonic state. A hypotonic state is when the solute concentration of the extracellular fluid is lower than the intracellular fluid, which causes water to move into the cells and swell them.

Choice C reason: This is correct because intracellular and extracellular fluid is equal in an isotonic state. An isotonic state is when the solute concentration of the extracellular fluid is the same as the intracellular fluid, which causes no net movement of water across the cell membrane.

Choice D reason: This is incorrect because interstitial fluid is less than the transcellular fluid in a situation of fluid imbalance, not an isotonic state. Interstitial fluid is the fluid that surrounds the cells, while transcellular fluid is the fluid that is contained in specialized cavities, such as cerebrospinal fluid, synovial fluid, or pleural fluid. The amount of transcellular fluid is normally very small compared to the interstitial fluid, but it can increase in certain conditions, such as edema, ascites, or hydrocephalus.

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Correct Answer is D

Explanation

Choice A reason: This is incorrect because sodium level of 145 mEq/L is within the normal range of 135 to 145 mEq/L. Sodium is not directly affected by respiratory alkalosis, but it may be altered by fluid balance or other conditions.

Choice B reason: This is incorrect because magnesium level of 1.3 mEq/L is within the normal range of 1.3 to 2.1 mEq/L. Magnesium is not directly affected by respiratory alkalosis, but it may be altered by renal function or other conditions.

Choice C reason: This is incorrect because phosphorus level of 3.0 mg/dL is within the normal range of 2.5 to 4.5 mg/dL. Phosphorus is not directly affected by respiratory alkalosis, but it may be altered by calcium balance or other conditions.

Choice D reason: This is correct because potassium level of 3.0 mEq/L is below the normal range of 3.5 to 5.0 mEq/L. Potassium is inversely related to hydrogen ions, which are decreased in respiratory alkalosis. As hydrogen ions move out of the cells to buffer the blood, potassium ions move into the cells to maintain electrical neutrality. This causes hypokalemia, or low potassium level.

A. intracellular to the extracellular. B. interstitial to intravascular. C. interstitial to the intracellular. D. intravascular to the interstitial.

Correct Answer is D

Explanation

Choice A reason: Intracellular to the extracellular fluid shift is not the cause of low blood pressure in this case. This fluid shift occurs when the cells lose water due to osmosis, such as in dehydration or hypernatremia.

Choice B reason: Interstitial to intravascular fluid shift is not the cause of low blood pressure in this case. This fluid shift occurs when the fluid moves from the tissue spaces to the blood vessels, such as in hypovolemia or hypotonic fluid administration.

Choice C reason: Interstitial to the intracellular fluid shift is not the cause of low blood pressure in this case. This fluid shift occurs when the fluid moves from the tissue spaces to the cells, such as in overhydration or hyponatremia.

Choice D reason: Intravascular to the interstitial fluid shift is the cause of low blood pressure in this case. This fluid shift occurs when the fluid moves from the blood vessels to the tissue spaces, such as in edema, inflammation, or increased capillary permeability. This reduces the blood volume and lowers the blood pressure.

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An isotonic state exists within a patient's body fluids when the solute concentration of:

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Correct Answer is D

Explanation

The patient who was admitted after vomiting for 3 days would show an abnormally low blood pressure because of a fluid shift from:

Correct Answer is D

Explanation

An electrolyte is a mineral or salt dissolved in the body. (Write True or False)

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